42661550 has 24 divisors (see below), whose sum is σ = 82802736. Its totient is φ = 16322240.

The previous prime is 42661537. The next prime is 42661589. The reversal of 42661550 is 5516624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17399 + ... + 19698.

It is an arithmetic number, because the mean of its divisors is an integer number (3450114).

Almost surely, 2^42661550 is an apocalyptic number.

42661550 is a deficient number, since it is larger than the sum of its proper divisors (40141186).

42661550 is a wasteful number, since it uses less digits than its factorization.

42661550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37132 (or 37127 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 42661550 is about 6531.5809724752. The cubic root of 42661550 is about 349.4182171485.

The spelling of 42661550 in words is "forty-two million, six hundred sixty-one thousand, five hundred fifty".